ASTROSAT CZTI

Data Quality Report

Orbit 18517

Creation date: 2024-06-27T17:50:54.757327
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_187T03_9000002748_18517cztM0_level2.evt modeM0/AS1A05_187T03_9000002748_18517cztM0_level2_quad_clean.evt
Size (bytes)842,336,64089,161,920
Size803.3 MB 85.0 MB
Events in quadrant A4,626,835561,468
Events in quadrant B4,140,847585,248
Events in quadrant C4,101,315559,434
Events in quadrant D12,115,549451,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190502
B0173962
C0172923
D0412662

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77864055.201644%
B77862493.198048%
C77851712.196532%
D7786250532.173131%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8456 7787 183 183 2.16% 2.35%
B 8456 7787 38 38 0.45% 0.49%
C 8455 7786 2 2 0.02% 0.03%
D 8456 7786 2495 2495 29.51% 32.04%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 916745 4774.58 940 919 191.8
A 14 111 56378 289.13 940 919 191.8
A 15 192 13829 67.31 940 919 191.8
B 7 220 146331 772.08 960 935 188.3
B 15 222 116559 613.99 960 935 188.3
B 0 228 23703 120.9 960 935 188.3
C 3 233 358339 1622.88 920 925 220.2
C 14 238 139129 627.53 920 925 220.2
C 0 207 13685 57.94 920 925 220.2
D 13 168 7960034 42003.46 771 748 189.5
D 1 52 623126 3284.47 771 748 189.5
D 7 238 346427 1824.25 771 748 189.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter